common logarithm

American  

noun

Mathematics.

1. a logarithm having 10 as the base.

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common logarithm British  

noun

1. a logarithm to the base ten. Usually written log or log 10 Compare natural logarithm

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common logarithm Scientific  

1. A logarithm having 10 as its base.

2. Compare natural logarithm

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Etymology

Origin of common logarithm

First recorded in 1890–95

Example Sentences

For example, the common logarithm of 100 is 2, because 10 must be raised to the second power to equal 100.

From Textbooks • Feb. 14, 2019

To obtain the common logarithm of a number, use the log button on your calculator.

From Textbooks • Feb. 14, 2019

The common logarithm of a number less than 1 has a negative value.

From Textbooks • Feb. 14, 2019

In other words, the expression means We call a base-10 logarithm a common logarithm.

From Textbooks • Feb. 13, 2015

Real-world exponential problems with base can be rewritten as a common logarithm and then evaluated using a calculator.

From Textbooks • Feb. 13, 2015